A NEW COMPUTATIONAL FRAMEWORK FOR MODELING FACILITY-LEVEL SAFEGUARDS

Nuclear fuel cycle facilities face significant economic challenges in meeting safeguards, security, and environmental regulations. Prior experience has demonstrated that retrofits to meet regulatory requirements can be costly and time consuming. It is therefore advantageous to consider these goals during the facility design phase. The Separation and Safeguards Performance Model (SSPM) is a versatile tool that has been used for well over 15 years in the support of various safeguards design and analyses activities. However, the SSPM series of models has several weaknesses such as poor general availability to the broader community, steep domain knowledge requirements to run, sparse documentation, and slow computational times. Sandia National Laboratories has developed three separate frameworks to supersede the SSPM; the Material Accountancy Performance Indicator Toolkit (MAPIT), the Fissile Facility Flow Modeler (F3M), and the Separation and Safeguards Performance Library (SSPM-L). F3M and SSPM-L are introduced here for the first time as tools to complement MAPIT, which together, can be used to perform efficient and reliable end-to-end safeguards analyses, research, and design.